12438324996 has 192 divisors, whose sum is σ = 32188907520. Its totient is φ = 3724721280.

The previous prime is 12438324991. The next prime is 12438325019. The reversal of 12438324996 is 69942383421.

It is a super-2 number, since 2×12438324996² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12438324991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74480905 + ... + 74481071.

It is an arithmetic number, because the mean of its divisors is an integer number (167650560).

Almost surely, 2^12438324996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12438324996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16094453760).

12438324996 is an abundant number, since it is smaller than the sum of its proper divisors (19750582524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12438324996 is a wasteful number, since it uses less digits than its factorization.

12438324996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 412 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 51.

The spelling of 12438324996 in words is "twelve billion, four hundred thirty-eight million, three hundred twenty-four thousand, nine hundred ninety-six".